Steven Murphy was battling stage four lung cancer, his sister has revealed

Alleged murder victim Steven Murphy’s final weeks were marred by tragedy according to his heartbroken family, who described him as the “most gentle person you could possibly meet”.

Steven Murphy was allegedly murdered by Marco Yandle and his father Keith Yandle on February 19. Picture: Supplied

The family of alleged murder victim Steven Murphy has spoken out about the “most gentle person you could possibly meet”.

Rebecca Page, whose brother Mr Murphy’s remains were found in a 15m by 15m bunker inside a shed at a Kudla property after his alleged murder, says her sibling “never wanted to intentionally hurt anybody”.

“He would have been so scared and gone ‘what have I done to deserve this?’” Ms Page told A Current Affair.

“He would have been so scared and to be that vulnerable in a situation like that he would have been so fearful for himself, but mainly for his children.”

It is alleged Mr Murphy was murdered on February 19 by father and son Marco, 19, and Keith Yandle, 46.

On April 4, Mr Murphy’s remains were found in the bunker at the Yandle family property during a police search.

Steve Murphy’s remains were found in an underground bunker. Picture: Facebook

On April 7, the pair were arrested and charged with murder.

“(He) just didn’t deserve to go out like that,” Ms Page said of her brother’s alleged murder.

“That’s a human being with a family.

“My mind is completely blown away by it all.”

Ms Page revealed her brother, who she said left a note at his mother’s home when he was last seen on February 15, had been diagnosed with stage four lung cancer.

“He felt like he was being too much of a burden to her and I knew that it was really weird that he’d just leave here without contacting anybody to say he’d found somewhere to stay,” Ms Page said.

Steven Murphy’s sister Rebecca Page said her brother was the “most gentle person you could possibly meet”. Picture: A Current Affair

She said it would have “shattered” her brother to not be able to be with his children.

“His kids are everything to him so it would’ve absolutely broken his heart,” she said.

Marco and Keith Yandle have yet to enter pleas to murdering Mr Murphy on February 19.

The shed where Steven Murphy’s remains were found buried in a bunker. Picture: 7 NEWS

Keith is further charged with drug and firearms offences, as well as with concealing Mr Murphy’s remains – the first time that offence has been charged in SA.

On Monday, counsel for Marco asked the Supreme Court to grant their client home detention bail, offering up to $10,000 cash sureties to secure his release.

The 19-year-old was remanded in custody until Friday, when Justice Sandi McDonald will hand down her decision.